A switchable mid-infrared plasmonic perfect absorber with multispectral thermal imaging capability

Publikationstyp
Journal Article
Date Issued
2015-07-14
Sprache
English
Author(s)
Tittl, Andreas  
Michel, Ann Katrin U.
Schäferling, Martin
Yin, Xinghui
Gholipour, Behrad
Cui, Long
Wuttig, Matthias
Taubner, Thomas
Neubrech, Frank
Giessen, Harald
TORE-URI
https://hdl.handle.net/11420/62400
Journal
Advanced materials  
Volume
27
Issue
31
Start Page
4597
End Page
4603
Citation
Advanced Materials 27 (31): 4597-4603 (2015)
Publisher DOI
10.1002/adma.201502023
Scopus ID
2-s2.0-84939176452
Publisher
Wiley-VCH
A switchable perfect absorber with multispectral thermal imaging capability is presented. Aluminum nanoantenna arrays above a germanium antimony telluride (GST) spacer layer and aluminum mirror provide efficient wavelength-tunable absorption in the mid-infrared. Utilizing the amorphous-to-crystalline phase transition in GST, this device offers switchable absorption with strong reflectance contrast at resonance and large phase-change-induced spectral shifts.
Subjects
active plasmonics
GST
multispectral imaging
perfect absorbers
thermal imaging
DDC Class
600: Technology